Reusability of cyanobacteria-based biosorbents through consecutive adsorption-desorption cycles of bivalent metals

Effective management of heavy metal pollution requires a multi-faceted approach that includes regulations, monitoring, and remediation efforts. Cyanobacteria are photosynthetic prokaryotes that can be exploited for water remediation of heavy metals through the biosorption process. The aim of this study was to evaluate the ability of two halotolerant cyanobacteria to adsorb Cu2+, Ni2+, and Zn2+ from aqueous solutions adopting confined systems. Additionally, in order to improve the feasibility of the system, the use of cyanobacteriabased biosorbents in consecutive adsorption cycles was also assessed.